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by tntn 2938 days ago
Summit node CPUs can access GPU memory coherently and unified memory allows for a single pointer across all processors. On most systems that involves page faults migrating pages, but summit has something called ATS that allows GPU to directly access all system memory.

https://vimeo.com/262870773/recommended

1 comments

IBM integrated NVlink into their Power CPUs, well I'll be damned.